Measles, mumps, and rubella: vaccine use and strategies for elimination of measles, rubella, and congenital rubella syndrome and control of mumps: recommendations of the Advisory Committee on Immunization Practices (ACIP). Centers for Disease Control and Prevention, MMWR website. Available at:
http://www.cdc.gov/mmwr/preview/mmwrhtml/00053391.htm.
Published May 22, 1998. Accessed June 9, 2015.

MMR vaccine: What you need to know. Centers for Disease Control and Prevention website. Available at:
http://www.cdc.gov/vaccines/hcp/vis/vis-statements/mmr.pdf.
Updated April 20, 2012. Accessed June 9, 2015.